Credit to Sheryl's siteEasier Crispy Waffles2 cups flour1-1/2 tsp instant yeast1 stick melted butter2 cups warm milk 2 eggs2 tsp vanilla extract1 tbsp sugar1/2 tsp saltThe night before:1. Combine and whisk together the dry ingredients in a large bowl: flour, yeast, sugar and salt.2. Combine the melted butter and milk. Add the mixture to the dry ingredients. 3. Whisk eggs and vanilla together in a separate small bowl. Add the egg-vanilla mixture to the other mixture, and whisk until well-combined. 3. Cover with plastic wrap and stick in the fridge until tomorrow morning.The next morning:Prepare waffle iron as usual. Stir the batter to deflate it (it should be puffy and frothy). Add to waffle iron the same way you would other batter, keeping in mind that this batter will rise more than batters that use baking powder instead of yeast.